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From [log in to unmask] Tue Jul 9 18: |
31:54 1996 |
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WS6536E does say facilities to be in accordance to MIL-STD-1695. Do not
know what that said. MIL-STD-2000 para 5.4.9.2 says temperature shall be
maintained at 75 plus or minus 9 degrees F and the relative humidity shall
not exceed 65 percent. It also says when the humidity decreases to a level
of 30 percent or lower, ESD devices shall be processed with extraordinary
controls in accordance with MIL-STD-1686.
----------
From: [log in to unmask]
To: [log in to unmask]
Cc: [log in to unmask]
Subject: Re: Temp. and RH
Date: Monday, July 08, 1996 4:35PM
Hi!
There is a fair possibility that your "requirements" are from the Weapons
Specification 6536 which contained temp and humidity requirements for
assembly. I can't find a copy of 6536 but I believe that it bounced the
reader to
another Mil spec (1695??)which contained stuff on temperature, dust,
lighting,
humidity,
etc. Chase this lead down and see if it is helpful. Good Luck.
Dave Hillman
Rockwell Collins
[log in to unmask]
______________________________ Reply Separator
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Subject: Temp. and RH
Author: [log in to unmask] at ccmgw1
Date: 7/3/96 9:53 AM
Our PWB assembly facility is in a controlled environment kept at 72 degrees
F, and 50% R.H. The problem is, we don't remember how we decided these were
the best conditions. Does anyone know of an IPC document or other source
stating the best environmental conditions for PWB assembly (including SM
assembly)?
Any info. is appreciated. Thank you.
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